000 00304nam a2200121Ia 4500
008 221117b |||||||| |||| 00| 0 eng d
040 _aBGL
_cBGL
082 _a515.35KUM:M
100 _aKumar, R.
245 0 _aMathematics Series - Differential Equations
260 _aDelhi
_bVardhman
_c1997
942 _cGB
999 _c23417
_d23417